Don't ask me how to use them on your phone, because I'm not that tech savvy. I still use a phone that plugs into the wall ;P All I know is that these are short (20 to 47 seconds long each) mp3 clips of U2 songs.
Out of Control guitar solo
The Electric Co. (UABRS version) intro
Even Better Than The Real Thing guitar solo
Until the End of the World guitar solo
The Fly guitar solo
Mysterious Ways guitar solo (with short vocals at the beginning)
Last Night on Earth chorus
Vertigo intro, first verse, and chorus (iPod commercial version)
She actually requested Vertigo, which is why there are three different clips for that song. The quality on that last one is not all that great, due to the less-than-ideal quality of the source file.